The PIC32MX2 series has at least one advantage over PIC32MX1 series that it has built-in USB. This makes it perfect for small DAQ projects and peripheral interfaces to the standard PC. The breakout board is similar to the previous PIC32MX1 Breakout Board and Stellaris LM3S811 Breakout Board. Gerbers and complete design (CAD) files are available for download.

Could you help designing a board the size of a cigarette packet featuring one PIC32MX2 (receiving USB stereo audio and extracting the bass), one PIC32MX1 just after (splitting the medium and the high), and one WM8580 or WM8581 as multichannel Codec ? Only one quartz ? Provided we sync all I2S, we output six channels. The WM8580 and WM8581 also feature a good quality S/PDIF input. You get an universal digital stereo preamp and stereo 3-way crossover. Add an on-board 3-pin RC5 infrared receiver. Add a header connector for an optional digitally controlled analog volume and high quality balanced output stages.

The next project will base on a NXP LPC4330 and the same WM8580 or WM8581, up to eight channels thanks to the LPC4330 SGPIO emulating a four lanes I2S. Cannot say yet if that one will use the DACs in the 24-bit mode.

Kowing this, the PIC32-based board must cost a minimum, say 33% less than the LPC4330-based board.

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